The method of steganography where a tool, device, or method is used to conceal a message, e.g., invisible inks and microdots.
A form of masking that occurs when a weak signal is played immediately after a strong signal.
A method of watermarking that hides data within the continuous random texture patterns of an image. The technique is implemented by copying a region from a random texture pattern found in a picture to an area that has similar texture, resulting in a pair of identically textured regions in the picture.
A model for steganographic communication.